C# 数组长度（开发人员使用方法）

int [] numbers = { 1, 2, 3, 4, 5 };
int arrayLength = numbers.Length; // arrayLength will be 5

Dim numbers() As Integer = { 1, 2, 3, 4, 5 }
Dim arrayLength As Integer = numbers.Length ' arrayLength will be 5

int [] numbers = { 1, 2, 3, 4, 5 };
int arrayLength = 0;
foreach (var item in numbers)
{
    arrayLength++;
}
// arrayLength will be 5

Dim numbers() As Integer = { 1, 2, 3, 4, 5 }
Dim arrayLength As Integer = 0
For Each item In numbers
	arrayLength += 1
Next item
' arrayLength will be 5

int [] dimension = new int [5]; //One-dimensional int array, Length: 5, Rank: 1
string [,] dimensionTwo = new string [3, 4]; // Two-dimensional string array, Length: 3 * 4 = 12, Rank: 2

Dim dimension(4) As Integer 'One-dimensional int array, Length: 5, Rank: 1
Dim dimensionTwo(2, 3) As String ' Two-dimensional string array, Length: 3 * 4 = 12, Rank: 2

int [] numbers = { 1, 2, 3, 4, 5 };
// Incorrect usage leading to IndexOutOfRangeException
int value = numbers [10]; // Avoid accessing elements beyond the array length

Dim numbers() As Integer = { 1, 2, 3, 4, 5 }
' Incorrect usage leading to IndexOutOfRangeException
Dim value As Integer = numbers (10) ' Avoid accessing elements beyond the array length

List<int> dynamicList = new List<int>();
dynamicList.Add(1);
dynamicList.Add(2);
// No fixed length; the list can dynamically grow

Dim dynamicList As New List(Of Integer)()
dynamicList.Add(1)
dynamicList.Add(2)
' No fixed length; the list can dynamically grow

using IronPdf;

class Program
{
    static void Main(string[] args)
    {
        var renderer = new ChromePdfRenderer();

        // 1. Convert HTML String to PDF
        var htmlContent = "<h1>Hello, IronPDF!</h1><p>This is a PDF from an HTML string.</p>";
        var pdfFromHtmlString = renderer.RenderHtmlAsPdf(htmlContent);
        pdfFromHtmlString.SaveAs("HTMLStringToPDF.pdf");

        // 2. Convert HTML File to PDF
        var htmlFilePath = "path_to_your_html_file.html"; // Specify the path to your HTML file
        var pdfFromHtmlFile = renderer.RenderHtmlFileAsPdf(htmlFilePath);
        pdfFromHtmlFile.SaveAs("HTMLFileToPDF.pdf");

        // 3. Convert URL to PDF
        var url = "http://ironpdf.com"; // Specify the URL
        var pdfFromUrl = renderer.RenderUrlAsPdf(url);
        pdfFromUrl.SaveAs("URLToPDF.pdf");
    }
}

Imports IronPdf

Friend Class Program
	Shared Sub Main(ByVal args() As String)
		Dim renderer = New ChromePdfRenderer()

		' 1. Convert HTML String to PDF
		Dim htmlContent = "<h1>Hello, IronPDF!</h1><p>This is a PDF from an HTML string.</p>"
		Dim pdfFromHtmlString = renderer.RenderHtmlAsPdf(htmlContent)
		pdfFromHtmlString.SaveAs("HTMLStringToPDF.pdf")

		' 2. Convert HTML File to PDF
		Dim htmlFilePath = "path_to_your_html_file.html" ' Specify the path to your HTML file
		Dim pdfFromHtmlFile = renderer.RenderHtmlFileAsPdf(htmlFilePath)
		pdfFromHtmlFile.SaveAs("HTMLFileToPDF.pdf")

		' 3. Convert URL to PDF
		Dim url = "http://ironpdf.com" ' Specify the URL
		Dim pdfFromUrl = renderer.RenderUrlAsPdf(url)
		pdfFromUrl.SaveAs("URLToPDF.pdf")
	End Sub
End Class

using IronPdf;
using System;
using System.Collections.Generic;
using System.Linq;
class Program
{
    public static void Main()
    {
        // PDF files to open
        string [] pdfFiles = { "GeneratedPDF_1.pdf", "GeneratedPDF_2.pdf", "GeneratedPDF_3.pdf" };
        PdfDocument [] pdfArray = new PdfDocument [3];
        // Loop to open each PDF and extract information
        foreach (string pdfFile in pdfFiles)
        {
            // Load PDF document
            var pdfDocument = PdfDocument.FromFile(pdfFile);
            pdfArray.Append(pdfDocument);
        }
        int arrayLength = pdfArray.Length;
        Console.WriteLine("PDF array Length: "+arrayLength);
    }
}

Imports IronPdf
Imports System
Imports System.Collections.Generic
Imports System.Linq
Friend Class Program
	Public Shared Sub Main()
		' PDF files to open
		Dim pdfFiles() As String = { "GeneratedPDF_1.pdf", "GeneratedPDF_2.pdf", "GeneratedPDF_3.pdf" }
		Dim pdfArray(2) As PdfDocument
		' Loop to open each PDF and extract information
		For Each pdfFile As String In pdfFiles
			' Load PDF document
			Dim pdfDocument = PdfDocument.FromFile(pdfFile)
			pdfArray.Append(pdfDocument)
		Next pdfFile
		Dim arrayLength As Integer = pdfArray.Length
		Console.WriteLine("PDF array Length: " & arrayLength)
	End Sub
End Class